20 (木)	03:49	09:58	14:59	21:40
	25cm	9cm	18cm	-2cm
大潮 出 04:53 入 18:25 出 04:53 入 18:33

江差／桧山（北海道）2023年04月20日の10分毎の潮の高低差を確認できます。
また1日の潮の高低差が1番大きい（潮の流れが大きい）時間に「最大潮位差」と明記してます。

時刻	潮位	高低差	各ポイント
4/20 00:00	10.8	↑0.9	最大潮位差
4/20 00:10	11.7	↑0.9	最大潮位差
4/20 00:20	12.6	↑0.9	最大潮位差
4/20 00:30	13.4	↑0.8
4/20 00:40	14.3	↑0.9	最大潮位差
4/20 00:50	15.2	↑0.9	最大潮位差
4/20 01:00	16.0	↑0.8
4/20 01:10	16.8	↑0.8
4/20 01:20	17.6	↑0.8
4/20 01:30	18.4	↑0.8
4/20 01:40	19.1	↑0.7
4/20 01:50	19.8	↑0.7
4/20 02:00	20.5	↑0.7
4/20 02:10	21.1	↑0.6
4/20 02:20	21.6	↑0.5
4/20 02:30	22.1	↑0.5
4/20 02:40	22.6	↑0.5
4/20 02:50	23.0	↑0.4
4/20 03:00	23.3	↑0.3
4/20 03:10	23.6	↑0.3
4/20 03:20	23.8	↑0.2
4/20 03:30	23.9	↑0.1
4/20 03:40	24.0	↑0.1	満潮
4/20 03:50	24.0	0
4/20 04:00	24.0	0
4/20 04:10	23.9	↓-0.1
4/20 04:20	23.7	↓-0.2
4/20 04:30	23.5	↓-0.2
4/20 04:40	23.2	↓-0.3
4/20 04:50	22.9	↓-0.3
4/20 05:00	22.5	↓-0.4
4/20 05:10	22.1	↓-0.4
4/20 05:20	21.6	↓-0.5
4/20 05:30	21.1	↓-0.5
4/20 05:40	20.6	↓-0.5
4/20 05:50	20.0	↓-0.6
4/20 06:00	19.4	↓-0.6
4/20 06:10	18.8	↓-0.6
4/20 06:20	18.2	↓-0.6
4/20 06:30	17.6	↓-0.6
4/20 06:40	16.9	↓-0.7
4/20 06:50	16.3	↓-0.6
4/20 07:00	15.6	↓-0.7
4/20 07:10	15.0	↓-0.6
4/20 07:20	14.3	↓-0.7
4/20 07:30	13.7	↓-0.6
4/20 07:40	13.1	↓-0.6
4/20 07:50	12.6	↓-0.5
4/20 08:00	12.0	↓-0.6
4/20 08:10	11.5	↓-0.5
4/20 08:20	11.0	↓-0.5
4/20 08:30	10.6	↓-0.4
4/20 08:40	10.2	↓-0.4
4/20 08:50	9.9	↓-0.3
4/20 09:00	9.6	↓-0.3
4/20 09:10	9.3	↓-0.3
4/20 09:20	9.1	↓-0.2
4/20 09:30	8.9	↓-0.2
4/20 09:40	8.8	↓-0.1
4/20 09:50	8.8	0	干潮
4/20 10:00	8.7	↓-0.1
4/20 10:10	8.8	↑0.1
4/20 10:20	8.9	↑0.1
4/20 10:30	9.0	↑0.1
4/20 10:40	9.2	↑0.2
4/20 10:50	9.4	↑0.2
4/20 11:00	9.6	↑0.2
4/20 11:10	9.9	↑0.3
4/20 11:20	10.3	↑0.4
4/20 11:30	10.6	↑0.3
4/20 11:40	11.0	↑0.4
4/20 11:50	11.4	↑0.4
4/20 12:00	11.8	↑0.4
4/20 12:10	12.2	↑0.4
4/20 12:20	12.7	↑0.5
4/20 12:30	13.1	↑0.4
4/20 12:40	13.6	↑0.5
4/20 12:50	14.0	↑0.4
4/20 13:00	14.5	↑0.5
4/20 13:10	14.9	↑0.4
4/20 13:20	15.3	↑0.4
4/20 13:30	15.7	↑0.4
4/20 13:40	16.0	↑0.3
4/20 13:50	16.3	↑0.3
4/20 14:00	16.6	↑0.3
4/20 14:10	16.9	↑0.3
4/20 14:20	17.1	↑0.2
4/20 14:30	17.2	↑0.1
4/20 14:40	17.3	↑0.1
4/20 14:50	17.4	↑0.1	満潮
4/20 15:00	17.4	0
4/20 15:10	17.4	0
4/20 15:20	17.3	↓-0.1
4/20 15:30	17.1	↓-0.2
4/20 15:40	16.9	↓-0.2
4/20 15:50	16.7	↓-0.2
4/20 16:00	16.4	↓-0.3
4/20 16:10	16.0	↓-0.4
4/20 16:20	15.6	↓-0.4
4/20 16:30	15.1	↓-0.5
4/20 16:40	14.6	↓-0.5
4/20 16:50	14.1	↓-0.5
4/20 17:00	13.5	↓-0.6
4/20 17:10	12.8	↓-0.7
4/20 17:20	12.2	↓-0.6
4/20 17:30	11.5	↓-0.7
4/20 17:40	10.7	↓-0.8
4/20 17:50	10.0	↓-0.7
4/20 18:00	9.2	↓-0.8
4/20 18:10	8.4	↓-0.8
4/20 18:20	7.6	↓-0.8
4/20 18:30	6.8	↓-0.8
4/20 18:40	6.0	↓-0.8
4/20 18:50	5.2	↓-0.8
4/20 19:00	4.4	↓-0.8
4/20 19:10	3.6	↓-0.8
4/20 19:20	2.9	↓-0.7
4/20 19:30	2.2	↓-0.7
4/20 19:40	1.5	↓-0.7
4/20 19:50	0.8	↓-0.7
4/20 20:00	0.2	↓-0.6
4/20 20:10	-0.4	↓-0.6
4/20 20:20	-0.9	↓-0.5
4/20 20:30	-1.4	↓-0.5
4/20 20:40	-1.8	↓-0.4
4/20 20:50	-2.1	↓-0.3
4/20 21:00	-2.4	↓-0.3
4/20 21:10	-2.6	↓-0.2
4/20 21:20	-2.8	↓-0.2
4/20 21:30	-2.9	↓-0.1	干潮
4/20 21:40	-2.9	0	干潮
4/20 21:50	-2.9	0
4/20 22:00	-2.8	↑0.1
4/20 22:10	-2.6	↑0.2
4/20 22:20	-2.3	↑0.3
4/20 22:30	-2.0	↑0.3
4/20 22:40	-1.6	↑0.4
4/20 22:50	-1.2	↑0.4
4/20 23:00	-0.7	↑0.5
4/20 23:10	-0.1	↑0.6
4/20 23:20	0.5	↑0.6
4/20 23:30	1.2	↑0.7
4/20 23:40	1.9	↑0.7
4/20 23:50	2.6	↑0.7